add initial TinySpHEAR picture

README.md

@@ -15,7 +15,7 @@ At this point the 3D models include the TinySpHEAR, a four capsule first order A
 
 The TinySpHEAR microphone is a traditional 4 capsule tetrahedral first order Ambisonics microphone.
 
-![TinySpHEAR][pictures/TinySpHEAR.png]
+![TinySpHEAR](pictures/TinySpHEAR.png "TinySpHEAR")
 
 The four capsule holders come in two flavors, one for the upper two capsules and another for the bottom two capsules that connect into the microphone mount. The capsule holders have legs with fingers that interlock and hold the structure together. There are two styles of usable interconnections, horizontal legs (easier to print and assemble, a bit bigger) and vertical legs (more difficult to print but more compact). There is a third style of legs intended to print the whole assembly in one go in a more sophisticated 3D printer but this has not been tested.